fires off a new tv ad slamming gop candidate mitt romney for not, quote, coming clean about his tax returns while criticizing americans who don't pay income taxes. romney has released just two years of his tax information. this as the presidential debates are just nine days away. >>> a sweeping analysis of the genes behind breast cancer. scientists announced that they have found four major classes. disease. the new finding offers hope for better targeted treatments, possibly putting drugs already on the market to work, including one currently used to fight ovarian cancer. the study was published by the journal "nature." >>> a winning streak went uninterrupted last night at the emmy awards as "modern family" took home the prize for best comedy for the third year in a row. top drama this year went to terrorism thriller "homeland." the show stars claire danes and damian lewis who also took the top acting awards but a strange new record for critically acclaimed "mad men," the show had an unprecedented 17 nominations but zero wins. >>> and it was a photo finish after a slow weekend at th

coming off one of the roughest couple of weeks, mitt romney's campaign is focused on jump starting the defense and economic message with many republicans pressing him to sharpen his tone. looking to restore confidence in his campaign, a defiantly optimistic mitt romney rallied supporters under the lights in denver late sunday >> i need your help. we have got to stand together. we have got to work together. we're taking back america. we must keep this nation the hope of the earth. >> reporter: earlier romney refused to concede he's an underdog in a series of battleground states and accused the president of distorting his positions. >> i'm did not going to try to fool people into making people think things he doesn't. he's trying to fool people to make them believe i think things that i don't. >> reporter: privately romney and the president have been preparing for the debates, the first here in denver next week, but publicly the two campaigns are trying to lower expectations, even complimenting their opponent's debate skills. for his part on "60 minutes" president obama defended his